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CC767S Brass vs. C87200 Bronze

Both CC767S brass and C87200 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 65% of their average alloy composition in common.

For each property being compared, the top bar is CC767S brass and the bottom bar is C87200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 86
85
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 34
30
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
43
Tensile Strength: Ultimate (UTS), MPa 430
380
Tensile Strength: Yield (Proof), MPa 150
170

Thermal Properties

Latent Heat of Fusion, J/g 180
260
Maximum Temperature: Mechanical, °C 120
200
Melting Completion (Liquidus), °C 840
970
Melting Onset (Solidus), °C 790
860
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 110
28
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 36
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 23
29
Density, g/cm3 8.0
8.6
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 47
44
Embodied Water, L/kg 330
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
93
Resilience: Unit (Modulus of Resilience), kJ/m3 100
130
Stiffness to Weight: Axial, points 7.3
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15
12
Strength to Weight: Bending, points 16
14
Thermal Diffusivity, mm2/s 34
8.0
Thermal Shock Resistance, points 14
14

Alloy Composition

Aluminum (Al), % 0.1 to 0.8
0 to 1.5
Copper (Cu), % 58 to 64
89 to 99
Iron (Fe), % 0 to 0.5
0 to 2.5
Lead (Pb), % 0 to 0.1
0 to 0.5
Manganese (Mn), % 0 to 0.5
0 to 1.5
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0
0 to 0.5
Silicon (Si), % 0 to 0.2
1.0 to 5.0
Tin (Sn), % 0 to 0.1
0 to 1.0
Zinc (Zn), % 32.8 to 41.9
0 to 5.0